Question taken from a recent support request :
Is it safe to remove the output files written by DB Archive utility ?
Does the Automation Engine database need them ?
Answer:These
files are not necessary for the database to operate. They are merely a
backup copy of statistical entries and reports of previous object
executions, which you can view with the Archive Browser.
Depending
on your business needs (if for instance your business requirement is to
keep a backup copy of activities for the last year), you can simply
move them to a different location if you want to keep them. Otherwise
they can be removed safely.